But conditions in a silicon chip-fabrication facility are anyone's guess due to the lack of regulation or regulatory oversight, Prather says.

然而由于缺乏管理或者管理疏忽，芯片制造工厂里的条件是谁也说不准的，普莱瑟说道。

youdao

Critics complain that no one makes anything in Silicon Valley anymore, a two-decade-long gripe that arcs from Apple s decision to shut down its Fremont, California factory in 1992 through Intel s shuttering of its last Silicon Valley chip-fabrication plant in 2009.

FORBES: Made In Silicon Valley